Broward deputies responded to the threat 70 to 80 seconds after the first shot was fired, according to Sheriff Israel. Security measures have been increased for an unknown amount of time, while authorities continue to investigate.

Authorities also say there was no indication of an altercation aboard the incoming plane on which Santiago was traveling, nor on his way to the baggage claim area. Special Agent Piro says the suspect followed all airport procedures to check in his weapon.

The FBI is currently looking into other places where he traveled, as well as social media, family and friends. Special Agent Piro says they have several significant leads on which to follow up.

Gov. Rick Scott and the state are working to provide all resources necessary for travelers and families affected by the shooting. For passengers who are still searching for luggage left at the airport, please contact 1-866-435-9355.